Question #1358

Two balls, each with a mass of 0.764 kg,

exert a gravitational force of 9.00 × 10−11 N

on each other.

How far apart are the balls? The value

of the universal gravitational constant is

6.673 × 10−11 Nm2/kg2.

Answer in units of m.

exert a gravitational force of 9.00 × 10−11 N

on each other.

How far apart are the balls? The value

of the universal gravitational constant is

6.673 × 10−11 Nm2/kg2.

Answer in units of m.

Expert's answer

According the law of gravitation attraction:

F = G M_{1}M_{2}/R2

Thus

R = √(GM_{1}M_{2} / F) = √(6.673 × 10−11 * 0.7642/9.00 × 10−11) = 0.66 m

F = G M

Thus

R = √(GM

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